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Hey guys, I need an OEM lift pump for some R&D. Anyone willing to part with one after they upgraded to an aftermarket unit, please let me know! Kris

Still fighting the erratic idle, cannot find anything that points to the issue. Let the car idle in park/ neutral, no issues. Only comes when the car is in drive and stopped with the foot on the brake. The idle will dip slightly then it will start bucking real bad. During this, fuel trims...

Update... the fuel pump replacement did not fix either issue. The pump proved to be faulty, but something else is causing these issues. Car is going back to the dealer tomorrow for further diagnostics. At this point, I feel it is something more serious in the PCM or something along these lines...

So to shed some light on this older thread, my car continued with bad idle, no matter what I did in the calibration to correct it until the car started dying completely. Then I had another issue, my HPFP would not push fuel pressure over 900psi, this is a recent finding. Took the dealership...

I went through, changed target idle just to confirm that didn't mess with anything, and as suspected it didn't. I went through and found that the MAF calibration needed adjustment. The fuel trims at idle were way off, the idle would be horrible on both 93 octane and E85, corrected the MAF no...

I am a tuner, and I am experiencing the same issues. I am toying with a few different things, I will let you guys know what I find. I notice the car only does it on ethanol blends or full e85, seemed to point towards the Flex Fuel tune as those and the 2018 Mustang don't seem to work as well as...

The stock airbox on the 18 is very good. Flow characteristics, tube diameter, and heat management, it's hard to beat. Kris

I recently installed long tubes this past weekend. I am working on finalizing the transmission tune on the street and will completely rework the VCT with the addition of the long tubes to make sure there is no hidden power there. I will again due a 93 vs E70 comparison once VCT tuning is...

We will see about this...

Normally I would agree to both of you under certain circumstances, however, with my setup, I will have to reconstruct my entire midsection to get it to fit. I have a better chance at getting the smaller 11386 to fit. Kris

I too have long tubes paired with my active exhaust on my 18. The sound is really good, however, the rasp from 2000-2500rpm ruins it for me. Also, at WOT when the valves open, on my setup, it wakes the dead... a bit too much for me. I purchased Magnaflow 12468 to weld in place of my x pipe...

You can't compare dynos. The number one person gets compared to another from a different dyno, location, etc. is completely non comparable. You can only compare on the EXACT same dyno. A dyno is a tool used to display horsepower and to see changes from a calibration adjustment, only for before...

Understandable. have to make what you have work. I will be tuning the VCT on my 18 here pretty soon with the addition of long tubes. Curious what will change in the calibration. Kris

Touche, I'll give you that. Probably a little more left in the calibration. Yes, they are very quick, its the 10r80, such a good transmission. It is hard for them to trap that high. They need weight reduction and proper fuel.

No offense, but VCT tuning is not something you should spread over a week. More importantly, it should be done on a dyno to bracket the cams to determine what cam position at specific rpm breakpoints. I've done it with the virtual dyno before, but it took roughly 6 hours. I dropped it down to...

126-128 with the stock manifold.

Depends on the dyno. However, pump e85 will not gain 10-15 whp on a FBO car, like previously mentioned. All other numbers are accurate. However, numbers are irrelevant. Kris

Read the mod list again... carefully. An 18 manifold would be a nice upgrade over his existing manifold, however, not 50whp. It would probably bump it to 420-430. E85 won't make that much of a difference either, 5-8whp or so. Kris

That's funny... my car seems to like something around there as well... I wonder how we three would know that... LOL Kris